python-aiohttpHow to make async requests with Python Aiohttp?

Using Aiohttp, you can make asynchronous requests in Python. To do this, you need to create an async function and use the aiohttp.ClientSession object to make the request.

Example code

import aiohttp

async def fetch(session, url):
    async with session.get(url) as response:
        return await response.text()

async def main():
    async with aiohttp.ClientSession() as session:
        html = await fetch(session, 'http://python.org')
        print(html)

if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

Output example

<!doctype html>
<!--[if lt IE 7]>   <html class="no-js ie6 lt-ie7 lt-ie8 lt-ie9">   <![endif]-->
<!--[if IE 7]>      <html class="no-js ie7 lt-ie8 lt-ie9">          <![endif]-->
<!--[if IE 8]>      <html class="no-js ie8 lt-ie9">                 <![endif]-->
<!--[if gt IE 8]><!--><html class="no-js" lang="en" dir="ltr">  <!--<![endif]-->

<head>
    ...

The code consists of the following parts:

import aiohttp - imports the aiohttp library.
async def fetch(session, url) - defines an asynchronous function that takes a session and a URL as parameters and returns the response text.
async def main() - defines an asynchronous function that creates a session and calls the fetch function.
if __name__ == '__main__' - checks if the script is being run directly and creates an event loop.
loop.run_until_complete(main()) - runs the main function until it is complete.

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python-aiohttpHow to make async requests with Python Aiohttp?

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